Max Flow through pipe
Max Flow through pipe
(OP)
I am confused about flow concept and would appreciate your help.
I have a 2" pipe going to a tank from another 10" line. The pressure at the tie in point is 5 barg. Whats the max amount of water that will flow through pipe
I have a 2" pipe going to a tank from another 10" line. The pressure at the tie in point is 5 barg. Whats the max amount of water that will flow through pipe





RE: Max Flow through pipe
David
RE: Max Flow through pipe
If one is to design a system for flow, optimal velocity is around 7 ft/sec, or 2.1 m/s. That would mean around 75 gpm. You would be hard pressed to get more than about 100 gpm in the 2 inch line, and virtually assured to be at least 50 gpm.
RE: Max Flow through pipe
The concept is: the pressure drop (depends on flowrate) of water flowing in the pipe will be equal to available delta pressure in the system. The calculation to calculate the pipe system capacity itself is an iterative effort.
For example:
your tie-in point pressure : 5 barg
your tank pressure (at the point the water enter): 2 barg
your available delta pressure : 3 bar
You then develop your pipe model, incorporate all the length, fitting, valve, pipe type (roughness), pipe size etc. Then start the iterative process by trial and error input the flowrate and calculate the pressure drop. The flow that give you pressure drop equal to 3 bar then is the capacity of your pipe system.
The capacity of your pipe system can be change if your pipe condition change (change in pipe roughness), your tank pressure change (change in available delta pressure) etc...
hope this help
-rayz-
RE: Max Flow through pipe
RE: Max Flow through pipe
http://www.psig.org/papers/2000/0112.pdf
this might help u.
RE: Max Flow through pipe
Good luck,
Latexman
RE: Max Flow through pipe
I would do as devaxrayz put it, with further addition. I think you need to analyze this problem abit more than the simplistic form of looking at max flow. You need pipe characteristics,i.e material of pipe, roughness, length to point of delivery, types of bends if any to delivery point, types and number of valves (orofices, venturi etc as these have different delta-P's in addition to the pipe length delta p) and lastly wether the point of delivery is at the same elevation or not from supply). So max flow of water- going where? can be answered fully with your analysis of complete flow diagram.
RE: Max Flow through pipe